1. The pipeline of the dosing device should be kept unobstructed at all times, and the connection parts, filters, feed ports, and discharge ports of the device should be checked regularly and irregularly to observe whether there are deposits in these parts. If these symptoms are found, It should be cleaned up in time. 2. Regularly check whether the feeding port of the metering pump is blocked, and regularly clean the pipeline and filter to prevent blockage. 3. Regularly check the stirring device to check whether the stirring shaft rotates flexibly, whether the impeller is twisted and deformed, and whether the coupling sleeve is loose, so as to avoid excessive torque of the shaft and consume stirring power. If it is damaged, it should be replaced in time. 4. Regularly check the safety valve, pressure gauge and each pipeline valve to avoid leakage. The standby pump and the used pump should be used alternately to avoid long-term activation or deactivation of the same pump.

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